Is There Less Oxygen in the Winter Since It's Colder?

The video explains the importance of trees and phytoplankton in producing oxygen through photosynthesis. It discusses how oxygen levels vary seasonally, especially in the Northern Hemisphere, and how scientists measure these changes. Despite seasonal variations, there is always enough oxygen in the atmosphere, thanks to both land plants and marine phytoplankton.

What percentage of the air we breathe is oxygen, and where does it primarily come from?

Why is there less seasonal variation in oxygen levels in the Southern Hemisphere?